As stars such as Ben Affleck, who dons the Bat suit for the blockbuster, and Superman Henry Cavill walk the red carpet, security services are on high alert and the event's media line has been cancelled as an extra measure.

Despite today's harrowing events, the leads actors appeared happy and relaxed in their tailored navy suits as they walked the red carpet.

Joining them at the glitzy event was the gorgeous Amy Adams, who will resume her role as Lois Lane, dressed in an eye-catching blue gown.